A modular electromagnetic antenna assembly configured for securement to a structure is provided. The assembly includes an antenna, a radio, and a base. The base has a bracket securable to the structure and the base has at least one feed. The radio and base together form a waveguide that transmits radio waves between the radio and the antenna. The radio is removably secured to the base so as to form a removable mechanical connection to the base and a removable communication connection with the at least one feed through the base.

A modular electromagnetic antenna assembly configured for securement to a structure is provided. The assembly includes an antenna, a radio, and a base. The base has a bracket securable to the structure and the base has at least one feed. The radio and base together form a waveguide that transmits radio waves between the radio and the antenna. The radio is removably secured to the base so as to form a removable mechanical connection to the base and a removable communication connection with the at least one feed through the base.

A satellite antenna heating system, includes a satellite antenna reflector defining a reflector fluid chamber and that includes a reflector wall. The reflector wall includes a first surface that is located adjacent the reflector fluid chamber, and a second surface that is located opposite the reflector wall from the first surface and provides an outer surface of the satellite antenna reflector, wherein the reflector fluid chamber is configured to channel a fluid through at least a portion of the satellite antenna reflector.

An antenna having a feed horn assembly, a parabolic reflector assembly, and a mounting bracket assembly. The feed horn assembly has a circuit board housing having first and second molded housing halves and a main support arm. The feed horn assembly is adjustable, whereby the main support arm is adjusted from a collapsed configuration to an elongated configuration and vice-versa. The feed horn assembly further has a printed circuit board, a coaxial feed cable, an arm holder, and a coaxial radio frequency connector. The printed circuit board is triangular in shape. The circuit board housing houses the printed circuit board. The main support arm has a plurality of arm adjustment holes and extends from the arm holder to the circuit board housing. From the collapsed configuration to the elongated configuration there are intermediate configurations. The antenna has single polarization.

An antenna having a feed horn assembly, a parabolic reflector assembly, and a mounting bracket assembly. The feed horn assembly has a circuit board housing having first and second molded housing halves and a main support arm. The feed horn assembly is adjustable, whereby the main support arm is adjusted from a collapsed configuration to an elongated configuration and vice-versa. The feed horn assembly further has a printed circuit board, a coaxial feed cable, an arm holder, and a coaxial radio frequency connector. The printed circuit board is triangular in shape. The circuit board housing houses the printed circuit board. The main support arm has a plurality of arm adjustment holes and extends from the arm holder to the circuit board housing. From the collapsed configuration to the elongated configuration there are intermediate configurations. The antenna has single polarization.

An antenna system for an unmanned aerial vehicle (UAV) includes one or more antennas, a reflector, and a control system. The control system is configured to determine a density of antenna towers near the UAV, determine a position for an active antenna of the one or more antennas based on the density, and adjust the active antenna to the determined position. In some embodiments, the antenna system further includes one or more switches, each of the one or more antennas is a different distance from the reflector, and the switches are used to adjust the active antenna to the determined position by selecting a one of the one or more antennas closest to the determined position as the active antenna. In some embodiments, the antenna system further includes an actuator and the active antenna is moved to the determined position using the actuator.

An antenna system for an unmanned aerial vehicle (UAV) includes one or more antennas, a reflector, and a control system. The control system is configured to determine a density of antenna towers near the UAV, determine a position for an active antenna of the one or more antennas based on the density, and adjust the active antenna to the determined position. In some embodiments, the antenna system further includes one or more switches, each of the one or more antennas is a different distance from the reflector, and the switches are used to adjust the active antenna to the determined position by selecting a one of the one or more antennas closest to the determined position as the active antenna. In some embodiments, the antenna system further includes an actuator and the active antenna is moved to the determined position using the actuator.

Synthetic aperture radar transmit and receive antenna systems and methods of transmitting and receiving radar signals are disclosed. In one embodiment, a transmit and receive antenna system includes a transmit antenna array configured to transmit a plurality of radio frequency transmit signals, the transmit antenna array including a plurality of patch antenna elements mounted to a printed circuit board, each patch antenna element belonging to a subarray, and one or more power amplifiers, each power amplifier feeding a subarray of the patch antenna elements, and a reflectarray receive antenna configured to receive radio frequency signals including a plurality of reflectarray antenna elements mounted to a printed circuit board, at least one antenna feed configured to receive radio frequency signals reflected from the plurality of reflectarray antenna elements, and at least one low noise amplifier electrically connected to the at least one antenna feed.

A modular electromagnetic antenna assembly configured for securement to a structure is provided. The assembly includes an antenna, a radio, and a base. The base has a bracket securable to the structure and the base has at least one feed. The radio and base together form a waveguide that transmits radio waves between the radio and the antenna. The radio is removably secured to the base so as to form a removable mechanical connection to the base and a removable communication connection with the at least one feed through the base.

A modular electromagnetic antenna assembly configured for securement to a structure is provided. The assembly includes an antenna, a radio, and a base. The base has a bracket securable to the structure and the base has at least one feed. The radio and base together form a waveguide that transmits radio waves between the radio and the antenna. The radio is removably secured to the base so as to form a removable mechanical connection to the base and a removable communication connection with the at least one feed through the base.